Ive found some characters in your database, as [姜司] http://www.chineselanguage.org/cgi-bin/char.cgi?2639B that you assigned the chinese pronouciation PY.: "xing3". I dont think its a chinese character and I wonder where youve got the chinese pronounciation from???
As far as I know, its the Vietnamese "Nôm" (喃) character "gương" (mirror) - as the listed in unicode - and there is no pinyin at all, and you should rather not list it as chinese!!!